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Conference Paper: Rate loss caused by limited feedback and channel delay in coordinated multi-point system

TitleRate loss caused by limited feedback and channel delay in coordinated multi-point system
Authors
KeywordsBlock Diagonalization
Channel Delay
Comp
Limited Feedback
Issue Date2011
Citation
Ieee Vehicular Technology Conference, 2011 How to Cite?
Abstract
This paper investigates the performance of clustered base station (BS) coordination with limited feedback and channel state information (CSI) delay. Given imperfect CSI caused by the limited feedback and channel delay, the expression of data rate per cell is derived. Moreover, compared to the rate with perfect CSI, a rate loss upper bound is obtained. A optimal feedback bits expression are derived to minimize the rate loss caused by limited feedback and channel delay. The numerical results show that the rate loss reduces when the number of feedback bits increases and the channel delay decreases. Meanwhile, the rate loss value reaches to a fixed value when feedback bits increase gradually. On the other hand, when the channel delay increases gradually, the rate loss can be improved little by the increasing of feedback bits. Lastly, as SNR increases, the system performance with the imperfect CSI improves more slowly than that with the perfect CSI. © 2011 IEEE.
Persistent Identifierhttp://hdl.handle.net/10722/155644
ISSN
References

 

Author Affiliations
  1. Institute of Computing Technology Chinese Academy of Sciences
  2. Beijing University of Posts and Telecommunications
DC FieldValueLanguage
dc.contributor.authorShi, Jen_US
dc.contributor.authorZhang, Ten_US
dc.contributor.authorZhou, Yen_US
dc.contributor.authorZeng, Zen_US
dc.contributor.authorHuang, Zen_US
dc.date.accessioned2012-08-08T08:34:38Z-
dc.date.available2012-08-08T08:34:38Z-
dc.date.issued2011en_US
dc.identifier.citationIeee Vehicular Technology Conference, 2011en_US
dc.identifier.issn1550-2252en_US
dc.identifier.urihttp://hdl.handle.net/10722/155644-
dc.description.abstractThis paper investigates the performance of clustered base station (BS) coordination with limited feedback and channel state information (CSI) delay. Given imperfect CSI caused by the limited feedback and channel delay, the expression of data rate per cell is derived. Moreover, compared to the rate with perfect CSI, a rate loss upper bound is obtained. A optimal feedback bits expression are derived to minimize the rate loss caused by limited feedback and channel delay. The numerical results show that the rate loss reduces when the number of feedback bits increases and the channel delay decreases. Meanwhile, the rate loss value reaches to a fixed value when feedback bits increase gradually. On the other hand, when the channel delay increases gradually, the rate loss can be improved little by the increasing of feedback bits. Lastly, as SNR increases, the system performance with the imperfect CSI improves more slowly than that with the perfect CSI. © 2011 IEEE.en_US
dc.languageengen_US
dc.relation.ispartofIEEE Vehicular Technology Conferenceen_US
dc.subjectBlock Diagonalizationen_US
dc.subjectChannel Delayen_US
dc.subjectCompen_US
dc.subjectLimited Feedbacken_US
dc.titleRate loss caused by limited feedback and channel delay in coordinated multi-point systemen_US
dc.typeConference_Paperen_US
dc.identifier.emailZhou, Y:yqzhou@eee.hku.hken_US
dc.identifier.authorityZhou, Y=rp00214en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1109/VETECS.2011.5956610en_US
dc.identifier.scopuseid_2-s2.0-80051965113en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-80051965113&selection=ref&src=s&origin=recordpageen_US
dc.publisher.placeUnited Statesen_US
dc.identifier.scopusauthoridShi, J=7404495134en_US
dc.identifier.scopusauthoridZhang, T=9232337600en_US
dc.identifier.scopusauthoridZhou, Y=7405367062en_US
dc.identifier.scopusauthoridZeng, Z=34769191200en_US
dc.identifier.scopusauthoridHuang, Z=36801685200en_US

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